Revert "Schema: scheduler speed optimize: precalc bound queues of a host"
Revert "Schema: scheduler speed optimize: precalc bound queues of a host"

This reverts commit 889e538e37332e4ff47573c17dff07d2be3287d8.

The optimization does not help as expected. However, the
idea is not completely thrown away so we just revert the
patch to still have it in the history.

tapper/Tapper-Model,tapper/Tapper-Model